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Heuch I, Hagen K, Heuch I, Nygaard Ø, Zwart JA.Heuch I, et al. Among authors: nygaard o.Spine (Phila Pa 1976). 2010 Apr 1;35(7):764-8. doi: 10.1097/BRS.0b013e3181ba1531.Spine (Phila Pa 1976). 2010.PMID: 20228714
Gårseth M, Sonnewald U, White LR, Rød M, Zwart JA, Nygaard O, Aasly J.Gårseth M, et al. Among authors: nygaard o.J Neurosci Res. 2000 Jun 15;60(6):779-82. doi: 10.1002/1097-4547(20000615)60:6<779::AID-JNR10>3.0.CO;2-M.J Neurosci Res. 2000.PMID: 10861790
Vik A, Hulleberg G, Zwart JA, Nygaard OP.Vik A, et al. Among authors: nygaard op.Tidsskr Nor Laegeforen. 2000 Oct 10;120(24):2868-71.Tidsskr Nor Laegeforen. 2000.PMID: 11143406Free article.Norwegian.
Gårseth M, Sonnewald U, White LR, Rød M, Nygaard Ø, Zwart JA.Gårseth M, et al. Among authors: nygaard o.J Neurosci Res. 2002 Sep 1;69(5):692-5. doi: 10.1002/jnr.10357.J Neurosci Res. 2002.PMID: 12210836
Brox JI, Sørensen R, Friis A, Nygaard Ø, Indahl A, Keller A, Ingebrigtsen T, Eriksen HR, Holm I, Koller AK, Riise R, Reikerås O.Brox JI, et al. Among authors: nygaard o.Spine (Phila Pa 1976). 2003 Sep 1;28(17):1913-21. doi: 10.1097/01.BRS.0000083234.62751.7A.Spine (Phila Pa 1976). 2003.PMID: 12973134Clinical Trial.
Myran R, Kvistad KA, Nygaard OP, Andresen H, Folvik M, Zwart JA.Myran R, et al.Spine (Phila Pa 1976). 2008 Aug 15;33(18):2012-6. doi: 10.1097/BRS.0b013e31817bb0bd.Spine (Phila Pa 1976). 2008.PMID: 18708935
Nygaard ØP, Rø M, Andersen TI, Zwart JA.Nygaard ØP, et al.Tidsskr Nor Laegeforen. 2010 Nov 18;130(22):2252-5. doi: 10.4045/tidsskr.09.1285.Tidsskr Nor Laegeforen. 2010.PMID: 21109848Free article.Review.Norwegian.
Myran R, Zwart JA, Kvistad KA, Folvik M, Lydersen S, Ro M, Woodhouse A, Nygaard OP.Myran R, et al.Spine (Phila Pa 1976). 2011 Jun;36(13):E862-7. doi: 10.1097/BRS.0b013e3181ff1dde.Spine (Phila Pa 1976). 2011.PMID: 21289550